模仿Photoshop混合效果，例如乘法，叠加等 [英] Imitate Photoshop blend effects like multiply, overlay etc

问题描述

我正在制作一个带有整页背景图像的网站.我想为侧列创建一个背景图像，该图像的作用类似于带乘法作为混合模式的Photoshop图层.它只是一个蓝色的表面，带有Photoshop乘法层的行为".

I'm making a website with a full page background image. I want to create a background image for a side column that acts like a Photoshop layer with multiply as blend mode. It's just a blue colored surface with the 'behaviour' of a Photoshop multiply layer.

无法合并叠加层和图像，因为当以其他屏幕比例/大小打开网站时，背景可能会改变.

It's not possible to merge the overlay and the image since the background can change when the website is opened in another screen ratio/size.

SO上有很多解决方案，但是它们仅适用于将两个图像固定在一个位置上，而不是彩色的具有可变位置/背景的表面.

There are a lot of solutions on SO, but they only work with multiplying 2 images with a fixed position, not a colored surface with variable position/background.

有没有技巧可以实现这一目标?

Are there tricks to achieve this?

推荐答案

jsBin演示

使用CSS3属性 mix-blend-mode

Use the CSS3 property mix-blend-mode ^{MDN Docs}
(For fallback use an rgba or hsla color with a bit of alpha transparency.)

为元素分配所需的 blend-* 类，例如:

Assign a desired blend-* class to your element like:

/* ::: BLEND MODE CLASSES */

.blend-normal{ mix-blend-mode: normal; }
.blend-multiply{ mix-blend-mode: multiply; }
.blend-screen{ mix-blend-mode: screen; }
.blend-overlay{ mix-blend-mode: overlay; }
.blend-darken{ mix-blend-mode: darken; }
.blend-lighten{ mix-blend-mode: lighten; }
.blend-colordodge{ mix-blend-mode: color-dodge; }
.blend-colorburn{ mix-blend-mode: color-burn; }
.blend-hardlight{ mix-blend-mode: hard-light; }
.blend-softlight{ mix-blend-mode: soft-light; }
.blend-difference{ mix-blend-mode: difference; }
.blend-exclusion{ mix-blend-mode: exclusion; }
.blend-hue{ mix-blend-mode: hue; }
.blend-saturation{ mix-blend-mode: saturation; }
.blend-color{ mix-blend-mode: color; }
.blend-luminosity{ mix-blend-mode: luminosity; }


/* ::: SET HERE YOUR INITIAL COLORS */
div{  
  background: rgba(0, 80, 200, 0.8);
  color:      #fff;
}
div span{
  color:#000;
}


/* ::: FOR DEMO ONLY */
html, body{margin:0; height:100%;font:100%/1 sans-serif;}
body{background: url(http://i.stack.imgur.com/cBy6q.jpg)fixed 50%/cover;}
div{font-size:2.2em; padding:20px; margin:15px;}
div:first-of-type{margin-top:150px;}
div:last-of-type{margin-bottom:150px;}

<div class="">(rgba) <span>(rgba)</span></div>
<div class="blend-normal">normal <span>normal</span></div>
<div class="blend-multiply">multiply <span>multiply</span></div>
<div class="blend-screen">screen <span>screen</span></div>
<div class="blend-overlay">overlay <span>overlay</span></div>
<div class="blend-darken">darken <span>darken</span></div>
<div class="blend-lighten">lighten <span>lighten</span></div>
<div class="blend-colordodge">color-dodge <span>color-dodge</span></div>
<div class="blend-colorburn">color-burn <span>color-burn</span></div>
<div class="blend-hardlight">hard-light <span>hard-light</span></div>
<div class="blend-softlight">soft-light <span>soft-light</span></div>
<div class="blend-difference">difference <span>difference</span></div>
<div class="blend-exclusion">exclusion <span>exclusion</span></div>
<div class="blend-hue">hue <span>hue</span></div>
<div class="blend-saturation">saturation <span>saturation</span></div>
<div class="blend-color">color <span>color</span></div>
<div class="blend-luminosity">luminosity <span>luminosity</span></div>

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